Auger



(No Model.)

J. L. WHITESIDE.-

AUGE'R.

No. 277,966. Patented May 22,1883.

UNITED STATES PATENT OFFICE.

JAMES L. WHITESIDE, OF GHATTANOOGA, TENNESSEE.

AUGER.

SPECIFICATION forming part of Letters Patent'No. 277,966, dated May 22, 1883.

Application filed Jannaryl2,1883. (No model.)

To all whom it may concern: I

Be it known that I, JAMES L. WHITESIDE, of Chattanooga, Tennessee, have madea new and useful Improvement in Annular Angers, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification,- in which- Figure l is a side elevation, partly in section, of the improved auger; Fig. 2, an end elevation Fig. 3, a viewin perspective of the end of the auger, and Fig. 4 another view of the auger end.

The same letters of reference denote the same parts.

The present invention relates to the mode of constructing the cutting-blades, to the blades in combination with the means for removing the shavings, and to the shape of the spira blades for removing the shavings.

A represents the improved auger. It is composed substantially of the tube B, the cutters U C, and the spiral blades D D. The tube B is of the usual shape. The cutters O O are at least two in number. They are so relatively shaped, extended, and arranged as to cause the projection or projections of one of the cutters to come in line, as the anger is rotated, with the depression or depressions of the other of the cutters, and for the purpose of cutting a portion or portions of the wood with one of the cutters, and the remainder of the wood with the other of the cutters. This principle can be carried into practice variously. A desirable mode is that shown, the cutter 0 being made concave, with two cutting-edges, c c, and the cutter 0 being made convex, with one cutting-edge, c, and the two cutters being so arranged as to bring the depression a between the edges 0 c as far from the longitudinal axis of the anger as the edge 0. Then as the anger is rotated the edges 0 0 out two shavings, leaving between the shavings a portion, which is cut by the edge 0. The advantage of this combination of cutting-edges is that, first, the cutting can be more easily effected, and, second, the anger is less liable to clog, for the shavings cut by the cutter U or G are narrower and can be more readily removed than it made by a straight uniformly-extended edge. As many blades D D are employed as there are cutters, the blade D removing the shavings coming from the cutter G, and the blade D removing the shavings from the out ter 0. The blade D is deeper than the combined widths of the edges 0 c, and the blade D is deeper than the width of the edge c. This provides ample clearance, and at the same time the entire cut made by the three edges 0 c c is reduced to a minimum width. An'additional feature is the shape, in crosssection, of the blades D D. The face ct of each blade is made slightly concave, the effect of which is to cause the shaving to hug the tube B, and thereby be more readily removed.

I claim- The combination, in an annular anger, of two or more cutters relatively shaped to bring the projection or projections of one of the cutters in line with the depression or depressions of another of the cutters, and two or more spiral blades, each having concave faces,all

substantially as described.

JAMES L. WHITESIDE.

Witnesses:

0. D. MooDY, GEO. BULLOCK. 

